Replace the pickup roller (tray 1) ........................................................................................................ 51 Clean the pickup roller (tray 2) ............................................................................................................ 55 Replace the pickup roller (tray 2) ........................................................................................................ 62 5 Theory of operation Introduction ..........................................................................................................................................
70 Internal components ............................................................................................................................ 71 Timing .................................................................................................................................................. 73 Engine control system ......................................................................................................................... 74 Laser/scanner system .........................................................................................................................
76 Pickup/feed/delivery system ................................................................................................................ 77 Image-formation system ...................................................................................................................... 79 6 Removal and replacement Introduction .......................................................................................................................................... 84 Removal and replacement strategy ....................................................................................
84 Electrostatic discharge ........................................................................................................ 84 Required tools ..................................................................................................................... 84 Before performing service ................................................................................................................... 85 Pre-service procedures ....................................................................................................... 85 Parts removal order ............................................................................................................
85 Covers ................................................................................................................................................. 86 Left-side cover .................................................................................................................... 86 Right-side cover .................................................................................................................. 86 Back cover .......................................................................................................................... 87 Duplexer tray (HP LaserJet P2015d, P2015dn, and P2015x printers only) .......................
89 Top cover ............................................................................................................................ 90 Control panel ....................................................................................................................................... 95 Formatter ............................................................................................................................................. 97 Laser/scanner ......................................................................................................................................
98 Memory-tag-reader assembly .............................................................................................................. 99 Duplex-drive PCA (HP LaserJet P2015d, P2015dn, and P2015x printers only) .............................. 101 Fuser .................................................................................................................................................. 103 Fan .................................................................................................................................... 103 Duplex-drive gears (HP LaserJet P2015d, P2015dn, and P2015x printers only) ............
104 Duplex solenoid (HP LaserJet P2015d, P2015dn, and P2015x printers only) ................. 106 Fuser ................................................................................................................................. 107 Interlock assembly ............................................................................................................................. 118 ECU ................................................................................................................................................... 119 Main motor .........................................................................................................................................
126 Pickup and feed assemblies .............................................................................................................. 128 Transfer roller .................................................................................................................... 128 Registration assembly ...................................................................................................... 129 Main gear assembly/tray 2 pickup solenoid ...................................................................................... 130 Print-cartridge door ............................................................................................................................
134 7 Problem solving Basic problem solving ........................................................................................................................ 138 Status-light patterns ........................................................................................................................... 140 ENWW v